SUBTRACTIVE PLUG AND TAB PATTERNING WITH PHOTOBUCKETS FOR BACK END OF LINE (BEOL) SPACER-BASED INTERCONNECTS

    公开(公告)号:US20210050261A1

    公开(公告)日:2021-02-18

    申请号:US17085882

    申请日:2020-10-30

    Abstract: Subtractive plug and tab patterning with photobuckets for back end of line (BEOL) spacer-based interconnects is described. In an example, a back end of line (BEOL) metallization layer for a semiconductor structure includes an inter-layer dielectric (ILD) layer disposed above a substrate. A plurality of conductive lines is disposed in the ILD layer along a first direction. A conductive tab is disposed in the ILD layer, the conductive tab coupling two of the plurality of conductive lines along a second direction orthogonal to the first direction. A conductive via is coupled to one of the plurality of conductive lines, the conductive via having a via hardmask thereon. An uppermost surface of each of the ILD layer, the plurality of conductive lines, the conductive tab, and the via hardmask is planar with one another.

    MAGNETO-ELECTRIC SPIN ORBIT (MESO) STRUCTURES HAVING FUNCTIONAL OXIDE VIAS

    公开(公告)号:US20190259935A1

    公开(公告)日:2019-08-22

    申请号:US16346872

    申请日:2016-12-23

    Abstract: Magneto-electric spin orbital (MESO) structures having functional oxide vias, and method of fabricating magneto-electric spin orbital (MESO) structures having functional oxide vias, are described. In an example, a magneto-electric spin orbital (MESO) device includes a source region and a drain region in or above a substrate. A first via contact is on the source region. A second via contact is on the drain region, the second via contact laterally adjacent to the first via contact. A plurality of alternating ferromagnetic material lines and non-ferromagnetic conductive lines is above the first and second via contacts. A first of the ferromagnetic material lines is on the first via contact, and a second of the ferromagnetic material lines is on the second via contact. A spin orbit coupling (SOC) via is on the first of the ferromagnetic material lines. A functional oxide via is on the second of the ferromagnetic material lines.

    SURFACE-ALIGNED LITHOGRAPHIC PATTERNING APPROACHES FOR BACK END OF LINE (BEOL) INTERCONNECT FABRICATION

    公开(公告)号:US20190244806A1

    公开(公告)日:2019-08-08

    申请号:US16343385

    申请日:2016-12-02

    Abstract: Surface-aligned lithographic patterning approaches for back end of line (BEOL) interconnect fabrication, and the resulting structures, are described. In an example, an integrated circuit structure includes a substrate. A plurality of alternating first and second conductive lines is along a first direction of a back end of line (BEOL) metallization layer in a first inter-layer dielectric (ILD) layer above the substrate. A conductive via is on and electrically coupled to one of the conductive lines of the plurality of alternating first and second conductive lines, the conductive via centered over the one of the conductive lines. A second ILD layer is above plurality of alternating first and second conductive lines and laterally adjacent to the conductive via. The second ILD layer has an uppermost surface substantially co-planar with the flat top surface of the conductive via.

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